Update packages/svelte/src/reactivity/create-subscriber.js

Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>

packages/svelte/src/reactivity/create-subscriber.js

@@ -70,7 +70,7 @@ export function createSubscriber(start) {
 
 				return () => {
 					queueMicrotask(() => {
-						// Only count down after timeout, else we would reach 0 before our own render effect reruns,
+						// Only count down after a microtask, else we would reach 0 before our own render effect reruns,
 						// but reach 1 again when the tick callback of the prior teardown runs. That would mean we
 						// re-subcribe unnecessarily and create a memory leak because the old subscription is never cleaned up.
 						subscribers -= 1;